javascript - 单击按钮永久删除计时器

我有一个在页面加载时自动加载的弹出窗口，它在关闭按钮上还有一个计时器，其时间根据用户查看弹出窗口的次数而有所不同。它还有一个“打印”按钮，如果您按“g”键，可以重新调用弹出窗口。

我的注意力集中在“打印”按钮上。目前，当我单击“打印”按钮时，它会添加以下代码:

$("#timer").remove();
clearInterval(setMsg);

但是，如果您要重新加载页面，计时器会重新出现，就好像按钮根本没有被点击一样，它将是 5、15、30、45 或 60 秒，具体取决于您之前查看该页面的次数。我希望在单击“打印”按钮后永久删除计时器。这可能可以通过 localStorage 或 cookie 来实现，但我对这些类别没有经验。

请注意，计时器在代码段或 fiddle 中似乎不起作用因为我相信有几个功能无法正常工作，例如 document.write。如果您希望代码正常工作，请将其复制到 HTML 文件中并在浏览器中运行。我的代码如下:

$(document).ready(function() {
  $(document).keypress(function(e) {
    if (e.charCode === 65 || 103) {
      $('#PopUp').css("visibility", "visible");
      $('#PopUp').css("opacity", 1);
    }
  });
  
  $(function() {
    $('#PopUp').css("visibility", "visible");
    $('#PopUp').css("opacity", 1);
  });

  $(".close").click(function() {
    $('#PopUp').css("visibility", "hidden");
    $('#PopUp').css("opacity", 0);
  });
});

// initialization
var counter = 60;
var timesVisited = 0;
var cookieExpirationDays = 7; // don't expire cookies for a week
// test to see if localstorage/sessionStorage is available (localStorage has no expiration date)

if (typeof(Storage) !== "undefined") {
  counter = 60;
  timesVisited = localStorage.getItem("timesVisited");
  // first time
  if ((timesVisited == 0) || (timesVisited < 1)) {
    timesVisited = 1;
    localStorage.setItem("timesVisited", timesVisited);
    counter = 60;
  }
  // second time
  else if ((timesVisited >= 1) && (timesVisited <= 3)) {
    timesVisited++;
    localStorage.setItem("timesVisited", timesVisited);
    counter = 45;
  }
  // third time
  else if ((timesVisited >= 4) && (timesVisited <= 8)) {
    timesVisited++;
    localStorage.setItem("timesVisited", timesVisited);
    counter = 30;
  }
  // fourth time
  else if ((timesVisited >= 9) && (timesVisited <= 13)) {
    timesVisited++;
    localStorage.setItem("timesVisited", timesVisited);
    counter = 15;
  }
  // fifth time
  else if (timesVisited >= 14) {
    timesVisited++;
    localStorage.setItem("timesVisited", timesVisited);
    counter = 5;
  }
}
// No localstorage/sessionStorage. Use cookies 
else {
  timesVisited = getCookie("timesVisited");
  console.log(timesVisited);
  // first time
  if ((timesVisited == "") || (timesVisited < 1)) {
    timesVisited = 1;
    setCookie("timesVisited", timesVisited, cookieExpirationDays);
    counter = 60;
  }
  // second time
  else if ((timesVisited >= 1) && (timesVisited <= 3)) {
    timesVisited++;
    setCookie("timesVisited", timesVisited, cookieExpirationDays);
    counter = 45;
  }
  // third time
  else if ((timesVisited >= 4) && (timesVisited <= 8)) {
    timesVisited++;
    setCookie("timesVisited", timesVisited, cookieExpirationDays);
    counter = 30;
  }
  // fourth time
  else if ((timesVisited >= 9) && (timesVisited <= 13)) {
    timesVisited++;
    setCookie("timesVisited", timesVisited, cookieExpirationDays);
    counter = 15;
  }
  // fifth time
  else if (timesVisited >= 14) {
    timesVisited++;
    setCookie("timesVisited", timesVisited, cookieExpirationDays);
    counter = 5;
  }
}
var setMsg = setInterval(function() {
  counter--;
  if (counter >= 60 && counter >= 70) {
    $("#close-message").html("1:" + (counter - 60));
  } else if (counter >= 60 && counter < 70) {
    $("#close-message").html("1:0" + (counter - 60));
  } else if (counter >= 10) {
    $("#close-message").html("0:" + counter);
  } else if (counter > 0) {
    $("#close-message").html("0:0" + counter);
  } else {
    $(".close").click(function() {
      $('#PopUp').css("visibility", "hidden");
      $('#PopUp').css("opacity", 0);
    });
    $("#timer").remove();
    clearInterval(setMsg);
  }
}, 1000);
});

        function printDiv()
        {
            var content = document.getElementById('content').innerHTML;
            var win = window.open();
            win.document.write(content);
            win.print();	// JavaScript Print Function
            win.close();	//It will close window after Print.
        $( ".close" ).click(function() {
          $('#PopUp').css("visibility", "hidden"); 
          $('#PopUp').css("opacity", 0);
        });
        $("#timer").remove();
 	       clearInterval(setMsg);s
        }

.t {
  -webkit-transform-origin: top left;
  -moz-transform-origin: top left;
  -o-transform-origin: top left;
  -ms-transform-origin: top left;
  -webkit-transform: scale(0.25);
  -moz-transform: scale(0.25);
  -o-transform: scale(0.25);
  -ms-transform: scale(0.25);
  z-index: 2;
  position: absolute;
  white-space: pre;
  overflow: visible;
}

#t1_1 {
  left: 256px;
  top: 35px;
  letter-spacing: 0.1px;
}

#t2_1 {
  left: 334px;
  top: 87px;
  word-spacing: -0.1px;
}

#t3_1 {
  left: 210px;
  top: 123px;
}

#t4_1 {
  left: 238px;
  top: 123px;
  word-spacing: -0.3px;
}

#t5_1 {
  left: 210px;
  top: 141px;
}

#t6_1 {
  left: 210px;
  top: 160px;
}

#t7_1 {
  left: 210px;
  top: 179px;
}

#t8_1 {
  left: 238px;
  top: 141px;
  letter-spacing: -0.1px;
  word-spacing: -0.1px;
}

#t9_1 {
  left: 238px;
  top: 160px;
  word-spacing: -0.1px;
}

#ta_1 {
  left: 238px;
  top: 179px;
  word-spacing: -0.1px;
}

#tb_1 {
  left: 343px;
  top: 242px;
  letter-spacing: -0.1px;
}

#tc_1 {
  left: 210px;
  top: 278px;
}

#td_1 {
  left: 210px;
  top: 297px;
}

#te_1 {
  left: 210px;
  top: 315px;
}

#tf_1 {
  left: 210px;
  top: 334px;
}

#tg_1 {
  left: 238px;
  top: 278px;
  word-spacing: -0.1px;
}

#th_1 {
  left: 238px;
  top: 297px;
  word-spacing: -0.1px;
}

#ti_1 {
  left: 238px;
  top: 315px;
  word-spacing: -0.2px;
}

#tj_1 {
  left: 238px;
  top: 334px;
  word-spacing: -0.1px;
}

#tk_1 {
  left: 286px;
  top: 393px;
  word-spacing: -0.1px;
}

#tl_1 {
  left: 210px;
  top: 429px;
}

#tm_1 {
  left: 210px;
  top: 448px;
}

#tn_1 {
  left: 210px;
  top: 466px;
}

#to_1 {
  left: 210px;
  top: 485px;
}

#tp_1 {
  left: 238px;
  top: 429px;
  word-spacing: -0.3px;
}

#tq_1 {
  left: 238px;
  top: 448px;
  word-spacing: -0.1px;
}

#tr_1 {
  left: 238px;
  top: 466px;
  word-spacing: -0.1px;
}

#ts_1 {
  left: 238px;
  top: 485px;
  word-spacing: -0.2px;
}

#tt_1 {
  left: 326px;
  top: 544px;
  letter-spacing: -0.1px;
}

#tu_1 {
  left: 210px;
  top: 580px;
}

#tv_1 {
  left: 210px;
  top: 599px;
}

#tw_1 {
  left: 210px;
  top: 618px;
}

#tx_1 {
  left: 238px;
  top: 618px;
}

#ty_1 {
  left: 210px;
  top: 636px;
}

#tz_1 {
  left: 238px;
  top: 636px;
}

#t10_1 {
  left: 210px;
  top: 655px;
}

#t11_1 {
  left: 238px;
  top: 580px;
  word-spacing: -0.1px;
}

#t12_1 {
  left: 238px;
  top: 599px;
  word-spacing: -0.2px;
}

#t13_1 {
  left: 238px;
  top: 655px;
  word-spacing: -0.1px;
}

#t14_1 {
  left: 264px;
  top: 716px;
  word-spacing: -0.2px;
}

#t15_1 {
  left: 210px;
  top: 752px;
}

#t16_1 {
  left: 210px;
  top: 771px;
}

#t17_1 {
  left: 210px;
  top: 789px;
}

#t18_1 {
  left: 210px;
  top: 808px;
}

#t19_1 {
  left: 238px;
  top: 752px;
  word-spacing: -0.1px;
}

#t1a_1 {
  left: 238px;
  top: 771px;
  word-spacing: -0.1px;
}

#t1b_1 {
  left: 238px;
  top: 789px;
  word-spacing: -0.2px;
}

#t1c_1 {
  left: 238px;
  top: 808px;
  word-spacing: -0.1px;
}

.s1_1 {
  FONT-SIZE: 85.4px;
  FONT-FAMILY: Arial;
  color: rgb(0, 0, 0);
  FONT-WEIGHT: bold;
}

.s2_1 {
  FONT-SIZE: 61.2px;
  FONT-FAMILY: Arial;
  color: rgb(0, 0, 0);
  FONT-WEIGHT: bold;
}

.s3_1 {
  FONT-SIZE: 61.2px;
  FONT-FAMILY: SymbolMT_1z5;
  color: rgb(0, 0, 0);
}

.s4_1 {
  FONT-SIZE: 61.2px;
  FONT-FAMILY: Arial;
  color: rgb(0, 0, 0);
}

div {
  padding-top: 10px;
}

.button {
  font-size: 1em;
  padding: 10px;
  color: #fff;
  border: 2px solid orange;
  border-radius: 20px/50px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s ease-out;
}

.button:hover {
  background: orange;
}

.overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: visible;
  opacity: 1;
  height: 578%;
  width: 117.5%;
}

.overlay:target {
  visibility: hidden;
  opacity: 0;
  display: none;
}

.PopUp {
  margin: 50px auto;
  padding: 0px;
  background: #fff;
  border-radius: 5px;
  width: 60%;
  position: relative;
  transition: all 5s ease-in-out;
}

.PopUp .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}

.PopUp .close:hover {
  color: orange;
}

.PopUp .content {
  max-height: 117.5%;
  overflow: auto;
}

.pdf1 {
  width: 935px;
  height: 1210px;
  background-color: white;
  -moz-transform: scale(1);
  z-index: 0;
  border: none;
}

button {
  background-color: Transparent;
  background-repeat: no-repeat;
  border: none;
  cursor: pointer;
  overflow: hidden;
  outline: none;
  font-family: "Open Sans", sans-serif;
  font-weight: 700;
  color: #2D2D2D;
  font-size: 1rem;
  line-height: 1;
  text-align: center;
}

.Print {
  padding-bottom: 10px;
  margin-top: -5px;
}

.close-message {
  font-family: "Open Sans", sans-serif;
  font-weight: 700;
  color: black;
  font-size: 0.9rem;
  line-height: 1;
  position: absolute;
  top: 15px;
  left: 9px;
}

.timer {
  position: absolute;
  top: 5px;
  right: 20px;
  z-index: 2;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="PopUp" class="overlay">
  <div class="PopUp">
    <div class="timer" id="timer"><img src="http://i.imgur.com/87XaOWA.png">
      <p class="close-message" id="close-message"></p>
    </div>
    <a class="close" href="#">&#10005;</a>
    <div class="content" id="content">
      <div id="p1" class="p1" style="overflow: hidden; position: relative; width: 885px; height: 878px;">
        <!-- Begin page background -->
        <div id="pg1Overlay" style="width:100%; height:100%; position:absolute; z-index:1; background-color:rgba(0,0,0,0); -webkit-user-select: none;"></div>
        <div id="pg1" class="pg1" style="-webkit-user-select: none;"><img src="http://i.imgur.com/vcY42CW.png" id="pdf1" class="pdf1"></img>
        </div>
        <!-- End page background -->

        <!-- Begin text definitions (Positioned/styled in CSS) -->
        <div id="t1_1" class="t s1_1">Player Selection Criteria Evaluator Cue Card</div>
        <div id="t2_1" class="t s2_1">Skating – speed, quickness, technique</div>
        <div id="t3_1" class="t s3_1">♦</div>
        <div id="t4_1" class="t s4_1">Forward and Backward</div>
        <div id="t5_1" class="t s3_1">♦</div>
        <div id="t6_1" class="t s3_1">♦</div>
        <div id="t7_1" class="t s3_1">♦</div>
        <div id="t8_1" class="t s4_1">Turn both directions</div>
        <div id="t9_1" class="t s4_1">Stop both directions</div>
        <div id="ta_1" class="t s4_1">Are they in a good position for stability and strength</div>
        <div id="tb_1" class="t s2_1">Passing – technique, control, vision</div>
        <div id="tc_1" class="t s3_1">♦</div>
        <div id="td_1" class="t s3_1">♦</div>
        <div id="te_1" class="t s3_1">♦</div>
        <div id="tf_1" class="t s3_1">♦</div>
        <div id="tg_1" class="t s4_1">Forehand and Backhand</div>
        <div id="th_1" class="t s4_1">To moving and stationary target</div>
        <div id="ti_1" class="t s4_1">Vision – do they take a look and select best option</div>
        <div id="tj_1" class="t s4_1">Advanced – board passes, chips, saucer passes</div>
        <div id="tk_1" class="t s2_1">Puck Control – technique, open ice, confined space</div>
        <div id="tl_1" class="t s3_1">♦</div>
        <div id="tm_1" class="t s3_1">♦</div>
        <div id="tn_1" class="t s3_1">♦</div>
        <div id="to_1" class="t s3_1">♦</div>
        <div id="tp_1" class="t s4_1">Open carry with speed</div>
        <div id="tq_1" class="t s4_1">Execute dekes and fakes on the 1 on 1</div>
        <div id="tr_1" class="t s4_1">Can they handle the puck in traffic and tight space</div>
        <div id="ts_1" class="t s4_1">Ability to maintain control while being stick checked</div>
        <div id="tt_1" class="t s2_1">Shooting – technique, accuracy, velocity</div>
        <div id="tu_1" class="t s3_1">♦</div>
        <div id="tv_1" class="t s3_1">♦</div>
        <div id="tw_1" class="t s3_1">♦</div>
        <div id="tx_1" class="t s4_1">Velocity</div>
        <div id="ty_1" class="t s3_1">♦</div>
        <div id="tz_1" class="t s4_1">Accuracy</div>
        <div id="t10_1" class="t s3_1">♦</div>
        <div id="t11_1" class="t s4_1">Forehand and backhand</div>
        <div id="t12_1" class="t s4_1">Wrist shot, snap shot, slap shot</div>
        <div id="t13_1" class="t s4_1">Shot Selection – do they select the best shot for the opportunity?</div>
        <div id="t14_1" class="t s2_1">Game Understanding – Principles of Offence and Defence</div>
        <div id="t15_1" class="t s3_1">♦</div>
        <div id="t16_1" class="t s3_1">♦</div>
        <div id="t17_1" class="t s3_1">♦</div>
        <div id="t18_1" class="t s3_1">♦</div>
        <div id="t19_1" class="t s4_1">Player understands positional play</div>
        <div id="t1a_1" class="t s4_1">Player supports the puck on the defensive and offensive side of puck</div>
        <div id="t1b_1" class="t s4_1">Player communicates with teammates</div>
        <div id="t1c_1" class="t s4_1">Player has the ability to read and react.</div>
      </div>
    </div>
    <div id="Print" class="Print" align="center">
      <button onclick="printDiv()"><img src="http://i.imgur.com/HcXNoMC.png" /></button>
    </div>
  </div>
</div>

最佳答案

if (e.charCode === 65 || 103) 并没有按照您的想法行事。如果是其中任何一个，则不是。

意思是“如果 e.charCode 等于 65 或 103 是真实的，那么就这样做”。

两边都需要使用e.charCode ===

if (e.charCode === 65 || e.charCode === 103)

e.charCode 也是非标准的。您可能应该使用 e.which

$(document).keypress(function(e) {
    
    if (e.charCode === 65 || 103) {
       $("#yours").html(e.charCode)
    } else {
       $("#yours").html("nope")
    }


    if (e.charCode === 65 || e.charCode === 103) {
       $("#mine").html(e.charCode)
    } else {
       $("#mine").html("nope")
    }

    
    
  });

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div>Yours:  <span id="yours"></span></div>
<div>Mine:  <span id="mine"></span></div>

然后回答你的问题。所以添加一个不同的 localStorage 键，它被打印出来。在代码周围添加一个 if 语句以查看它是否是。如果是，则不要初始化计时器或添加事件处理程序。

$(document).ready(function() {
  if (localStorage.wasPrinted) return;  //add cookie check also
  .... rest of code ....
})

关于javascript - 单击按钮永久删除计时器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/43875331/

javascript - 单击按钮永久删除计时器

上一篇：javascript - 替换图像 src onclick jQuery

下一篇：css - 为什么这个文本没有旋转？